Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 49 for “"Lattice models"”.
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Stochastic Dynamics on Integrable Lattice Models
… which are naturally associated to these lattice models. Certain integrability properties of the six-vertex and dimer model, often related to the Yang–Baxter equation, allow for the construction of associated Markov chains. In some cases, these are measure preserving Markov chains on …
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Lattice models of amphiphile and solvent mixtures.
… A Monte Carlo simulation of a three dimensional lattice model of an amphiphile and solvent mixture has been developed as an extension of earlier work in two dimensions. In the earlier investigation the simulation was carried out with three segment amphiphiles on a two dimensional lattice and …
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Ultra-High Performance Concrete and Lattice Models
… for the development of a computer program called Lattice 3D. The program is a modeling tool for engineers studying the behavior of UHPC, and in the future will be developed into a finite element protocol for analyzing complex structures made of UHPC. Parametric studies on lattice models of thin …
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Exact Solutions to Lattice Models of Polymer Adsorption
… thesis, the solution to a variety of polymer models of adsorption are derived with generating functions. The partition functions of these models are then extracted when possible through combinatorial convolution identities or by solving their partial difference equations on the lattice.
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Collective dynamics in lattice models far from equilibrium
… explore the large-scale collective dynamics of lattice models that are far from equilibrium due to disorder, external driving, metastability and activity. First, we investigate the non-equilibrium behaviour of the three-dimensional random field Ising model at finite temperature, as an external …
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Studies in Statistical Mechanics and Supersymmetric Lattice Models
This work concerns an array of probabilistic models in the context of lattice systems and statistical field theory. Firstly, motivated by predictions about the Anderson transition, we study two distinct but related models on regular tree graphs: the vertex-reinforced jump process (VRJP), a random …
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Numerical Investigation of Exotic Phases in Quantum Lattice Models
… the investigation of exotic phases in quantum lattice models, and in particular of topological phases. A signi�cant portion of the thesis concerns the investigation of supersymmetric lattice models, which involves signi�cant use of the developed DoQO code. These are a relatively new (2003) …
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Chaotic behavior and energy polarisation in flatband lattice models
Flatbands (FBs) in lattice systems correspond to dispersionless energy bands cre- ated through what is called destructive interference, a phenomenon caused by the existence of lattice symmetries, resulting in compactly localised wave functions to just a few lattice sites. The existence of FBs in …
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Lattice models of glasses and Potts models for community detection
… I, we construct a configurationally constrained lattice glass model following the example of Biroli and Mezard (Phys. Rev. Lett., 82, 025501 (2001)), which we denote t154. By examining the relaxation, atomic motion, Stokes-Einstein relationship violation, time-dependent displacement (van Hove …
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Wave propagation in finite element and mass-spring-dashpot lattice models
… finite element model (FEM), a mass-spring lattice model (MSLM), and a mass-spring-dashpot lattice model (MSDLM) are investigated. Specifically, the error in the ultrasonic phase speed with variations in Poisson's ratio and angle of incidence is evaluated in each model of an isotropic …
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Wave propagation in finite element and mass-spring-dashpot lattice models
… finite element model (FEM), a mass-spring lattice model (MSLM), and a mass-spring-dashpot lattice model (MSDLM) are investigated. Specifically, the error in the ultrasonic phase speed with variations in Poisson's ratio and angle of incidence is evaluated in each model of an isotropic …
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Entanglement and hall viscosity
… our momentum transport argument to continuum and lattice models of the quantum Hall effect. We also leverage this insight to reveal a previously-unrecognized manifestation of Hall viscosity: the acoustic Faraday effect in superfluid Helium-3 B. We suggest that the acoustic Faraday effect is a new …
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Quasiparticles in Quantum Many-Body Systems
… of recognition. Realization of these phases on lattice systems and study of the anyon quasiparticles there are important and interesting avenue to research in unraveling new physics, which can not be found in the continuum, and this thesis is an important contribution in that direction. Also …
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Combinatorics and Modelling of Highly Branched Polymers
… -- in the mathematically convenient setting of lattice models of polymers. Next the adsorption behaviour of dendrimers is studied by adapting the Monte Carlo method of Random Sequential Adsorption to dendrimers and applying the model to experimental results of a novel synthetic dendrimer of …
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Development of Atomistic Potentials for Silicate Materials and Coarse-Grained Simulation of Self-Assembly at Surfaces
… a particular class of athermal two-dimensional lattice models. The effects of shape on self-assembly and thermodynamics for polyominoes and tetrominoes were examined. Many interesting results were observed, including complex clustering, non-ideal mixing, and phase transitions. In both parts, …
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Exact diagonalization study of strongly correlated topological quantum states
… diagonalization method to investigate quantum lattice models with strong interaction. Our research topics revolve around quantum phase transitions between novel phases. The goal is to find the best schemes for realizing these novel phases in experiments. We studied the fractional Chern …
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The structure of many-body entanglement
… general considerations about entanglement in lattice models of many-body physics to specific attempts to isolate the low energy structure of entanglement in quantum field theories. We conclude by describing some major open questions in the subject of many-body entanglement that we find …
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Neutronic characterization of a Molybdenum-99-producing CANDU fuel bundle and implications for reactivity-device worth and refuelling strategies
… made using well-established analysis methods and models where applicable, and new or improved methods and models are developed and used where necessary. In particular, a perturbation-theory approach is employed for evaluating the differences between the reactivity coefficients of the MPB and the …
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Estudo numérico da equação de Kardar, Parisi e Zhang
… Our results confirm previous estimates from lattice models, showing their reliability as representatives of the KPZ class.
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Development of a State-Space Aeroelastic Model of a Flexible T-Tail Aircraft for Flutter Analysis
… fluid structure interaction codes and doublet lattice panel codes. The computation resources and time required for CFD solutions makes them unattractive for preliminary design and doublet lattice models require considerable pre and post processing to provide satisfactory results. Thus, a …
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